1-alkylamino - 4 - arylamino-anthraquinone sulfonic acid reactive dyes



United States Patent US. Cl. 260-372 Claims ABSTRACT OF THE DISCLOSURE Fiber-reactive acid anthraquinone dyestuffs are provided. The novel dyestuffs are produced by converting amino anthraquinone dyestuffs of divergent types into the more valuable novel dyestuffs by the introduction of halogen acylamino methyl groups. The novel dyestuffs are especially useful for the batch dyeing and printing of fiber material containing polyamide, especially wool. The materials dyed and printed with the novel dyestuffs are also provided.

This application is a continuation-in-part of our patent application Ser. No. 530,351, filed Feb. 28, 1966, which application is in turn a continuation-in-part of application Ser. No. 462,073 filed June 7, 1965, and now US. Patent 3,376,320, issued Apr. 2, 1968. Application Ser. No. 462,073 is in turn a continuation-in-part of applications Ser. Nos. 261,864 and 261,865, both filed Feb. 28, 1963, and both now abandoned, which abandoned applications are in turn continuation applications of application Ser. No. 806,998, filed Apr. 17, 1959, and now abandoned.

The present invention concerns new fiber-reactive acid anthraquinone dyestuffs, processes for their production, the use thereof especially for the batch dyeing and printing of fiber material containing polyamide, especially wool, as well as, as industrial products, the materials dyed and printed therewith.

We have found that amino anthraquinone dyestuffs of the most different types can be converted into more valuable new dyestuffs by the introduction of halogen acylamino methyl groups. The reaction products according to the invention are 1,4-imino-anthraquinone dyes which are substituted at the imino-N- in l-position by the group wherein R and R each represent a lower, optionally substituted alkyl group or both taken together with the group to which they are linked, represent the cyclohexyl group, and substituted at the imino-N- in 4-position by the radical of an optionally further substituted diphenyl alkane, diphenyl cycloalkane, diphenyl ether or diphenyl thioether which is bound to the nitrogen by a carbon atom in the ring, said diphenyl radical being further substituted at a ring carbon atom thereof by the grouping CHzN-C O-Y wherein R represents hydrogen or a lower alkyl radical and Y represents a lower haloalkyl radical wherein halo is a halogen atom of the atomic weight of at least 35 and at most 80, but preferably chlorine. The diphenyl radical is further substituted by from one to two SO H groups, as well as optionally by substituents selected from the group consisting of lower alkyl, cycloalkyl, phenyloxy, alkoxy, fluorine, chlorine and bromine.

The production of the said dyestuffs is carried out by reacting an aminoanthraquinone dyestuff which contains at least one aromatic radical having a replaceable hydrogen atom bound to the anthraquinone nucleus by a hetero atom, with the N-methylol compound of a lower molecular aor fl-halogen fatty acid amide or with a functional derivative thereof which reacts in the same way as this methylol compound, the reaction being performed under such conditions that at least one halogen fatty acid amido methyl group is introduced. If necessary, the reaction product is then sulfonated and/or after-halogenated.

The carbacylamino methyl groups which are characteristic of the new dyestuffs of Formula I according to the invention, and of which generally one or two are present, contain a mobile halogen atom in the acyl radical, i.e. one which is easily split off in an alkaline medium by accepting the pair of electrons in the bond. The halogen atom is preferably bound in the wposition to the carbonyl group, and the acyl radical itself should have not more than four carbon atoms. Chiefiy chlorine and bromine are used as halogens. The chloracetylaminomethyl group is preferred, but also the bromacetylaminomethyl group and the chloropropionylaminomethyl group, the bromopropionylaminomethyl group as well as the a,fl-dichloropropionylaminomethyl group are useful as fiber-reactive groups in the compounds according to the invention. In these groups, Y thus represents CH Cl, -CH2BI', CH2CH2C]., CH2CH2BI, CHC1CH,, or CHBrCH The introduction of these halogen fatty acid amido methyl groups into the organic dyestuffs is achieved by the reaction with N-methylol compounds of aand [3- halogen fatty acid amides under appropriate conditions, as e.g., they were made known by A. Einhorn (A343, 207 (1905) and ibid. 361, 113 (1908)). This author and others have described the products of condensation from halogen fatty acid-N-methylol amides with colorless aromatic compounds of the benzene and naphthalene series. It has now been found that also colored organic compounds, in fact aminoanthraquinone dyestuffs, enter into an Einhorn reaction. This is conditional upon these dyestuffs containing at least one hydrogen atom replaceable in the conditions in which the reaction takes place. It is preferable that the replacement hydrogen atom should be on an aromatic ring system. The condensable aromatic radicals can be of either the isocyclic or the heterocyclic-aromatic series, in addition they can also be monoor poly-cyclic. The more nucleophilic they are under the reaction conditions, the more easily the condensation with the methylol compounds proceeds and the greater are the yields. The acylaminornethylation can be favourably influenced by suitable nucleophilic substitution of the aromatic radical and also it is sometimes possi ble to determine the point at which the carbonamido-' methyl group introduced is linked.

In the process according to the invention, the anthraquinone moiety of the dyestutf can be, for example, the radical of an a,a'diaminoanthraquinone derivative which contains a monovalent radical usable in the Einhorn reaction, advantageously a poly-nuclear aromatic radical of the benzene series, at one of the two amino groups.

This poly-nuclear radical is, for example, an aromatic radical such as, for example, the diphenyl ether, diphenyl sulphide, benzylphenyl radical. The phenyl nuclei of these radicals can contain the most various types of substituents, for example: alkyl, cycloalkyl, aralkyl and aryl groups such as the methyl, ethyl, propyl, butyl, amyl, tetramethylene, cyclohexyl, benzyl, chlorobenzyl, phenyl, tolyl, xylyl and chlorophenyl groups; ether groups such as the methoxy, ethoxy, butoxy, phenoxy, tolyloxy and chlorophenyloxy groups; also halogens such as chlorine or bromine.

As defined, the new dyestuffs contain at least one sulfonic acid group per dyestutf molecule. They can be introduced by sulfonation in a conventional manner before or after the Einhorn reaction. In this case the reaction is so performed that advantageously 1 to 2 sulfonic acid groups are introduced.

Dyestuffs containing halogen, advantageously bromine, can also be produced by halogenating the condensation products.

The halogen fatty acid N-methylol amides, which according to the process employed in the invention enter into consideration as second reaction component, are obtained by the addition of formaldehyde to 04- or B-halogen fatty acid amides with the assistance of basic condensing agents such as potassium carbonate, or else by the action of mineral acid under mild reaction conditions. In the process under review it is above all the N-methylol compounds of monochloracetamide, monobromacetamide, ocbromo-propionic acid amide, fi-chloroand fl-bromopropionic acid amide as well as of a. fl-dichloro-propionic acid amide which are of importance. N-methylol chloracetamide is the reactant to be preferred, both in consideration of its easy accessability and with regard to the good quality as dyes of the end products obtained by its use.

The condensation of the dyestuffs with the methylol compounds takes place in the presence of acid condensing agent or agents splitting off water which react in the same way. Among these, concentrated hydrochloric acid, zinc chloride, phosphorus pentoxide, acetic acid anhydride, syrupy phosphoric acid and fuming sulfuric acid are particularly applicable. The condensing agent to be preferred, however, is sulfuric acid concentrated until anhydrous, as normally it can be used at the same time as a solvent for the reactants. The temperature at which the reaction takes place may vary within a wide range and depends above all on the condensing agent used. In concentrated sulfuric acid, the reaction will normally proceed quickly and completely even at room temperature. In some cases it is necessary to work at a higher temperature, e.g. from 40-80 C., particularly when several carbon amido-methyl groups are to be introduced. It must be predicated however, that the reactants in these conditions are not broken down, and that if necessary the occurrence of sulfonation of the product of the reaction is admissible. The final products of the reaction are separated by pouring the solutions or suspension in surfuric acid into icewater, and isolated in the usual manner.

In place of the halogen fatty acid-N-methylol amides, reactive functional derivatives of these methylol compounds may be used, insofar as they react analogously. For example, the esters obtained by treating the methylol compound with inorganic or organic acids or acid halides or anhydrides come under this heading, as do the di- (fatty acid amido-methyl) ethers obtained by self-condensation in the presence of, e.g., phosphorus oxychloride. As however, these functional derivatives must be prepared from the methylol compounds, the method mentioned first is ordinarily preferred. Nevertheless, in individual cases in which the Einhorn-like process does not lead to satisfactory results, it is possible to achieve the desired end by means of these derivatives, above all with the N- chloromethyl amides. 'In some cases it is possible to simplify the process according to the invention by utilizing for the reaction in one step a mixture of the dyestufi with formaldehyde and the halogen fatty acid amide, instead of proceeding from the prepared methylol derivatives of the amides.

fi Nil-05 O NH-A (11) wherein A represents the radical of an optionally further substituted diphenyl alkane, diphenyl cycloalkane, diphenyl ether or diphenyl thioether which is bound to the nitrogen by a carbon atom in the ring and which contains at least two replaceable hyrogen atoms in the nucleus, and

R and R each represent a lower, optionally substituted alkyl group or both taken together with the group to which they are linked, represent the cyclohexyl group, with m mol of a compound .of Formula II HOCH2NCOY wherein: R represents hydrogen or a lower alkyl radical and Y has the same meaning as given hereinbefore or with a reactive derivative of the compound of Formula II under the conditions of the Einhorn reaction, mentioned supra, and previously, simultaneously or subsequently, sulphonating to form an anthraquinone dyestutf mixture of the average composition of formula A, R; and R have the meanings given in Formula I and R and Y have those given in Formula H and n and m each represent a number ranging from about 1 to 2, preferably however, about 1.

The radical A is preferably bound to the nitrogen by means of a ring carbon atom in the p-position to the bridging member.

As diphenyl alkane radical, A is, for example, the radical of a 1,1- or 1,2-diphenylethane, 2,2-diphenylpropane and, particularly, of a diphenylmethane; as diphenyl cycloalkane radical A is, e.g. the radical of a 1,1- diphenyl cyclohexane. Substituents in the diphenyl alkane, diphenyl cycloalkane, diphenyl ether and diphenylthioether radical A are, principally, low alkyl groups such as the methyl or ethyl group, low alkoxy groups such as the methoxy or ethoxy group, and halogens up to the atomic number 35, e.g., fluorine, chlorine or bromine.

If A is bound to the nitrogen by a ring carbon atom in p-position to the bridging member, then it can contain a phenoxy group in the o-position to the nitrogen bond.

Preferably the radical A is a diphenyl ether radical bound to the nitrogen in p-position to the ether oxygen atom.

The low alkyl groups in the positions of R and R have 1 to 6 and preferably 1 to 4 carbon atoms. When these alkyl groups are substituted then substituents are, e.g. the phenyl or cyclohexyl group; preferably however, they are unsubstituted.

R' advantageously represents hydrogen, otherwise it is a low alkyl radical containing at most 4 carbon atoms, for instance the methyl group.

In preferred acid anthraquinone dyestuffs of Formula III, Y represents the group --CH Cl.

Some of the starting materials of Formula I are known, or they can easily be produced in the known way by reacting 1-chloro-, l-bromoor l-sulphonic acidanthraquinone with an amine of the formula wherein R and R have the meanings given in Formula I, to form the corresponding l-(sec. alkylamino)-anthraquinone, halogenating this to form l-(sec. alkylamino)- 4-chloroor -4-bromo-anthraquinone, or l-cyclohexylamino-4-chloroor -4-bromo-anthraquinone, which compound is then reacted with an amine of the formula H NA wherein A has the meaning given in Formula I.

The compounds of Formula II are obtained, for example, by adding formaldehyde to the amides of the formula HN-C o-Y in the presence of basic condensing agents such as potassium carbonate. Reactive derivatives of compounds of Formula II are principally their esters with, in particular, inorganic acids, such as esters with hydrochloric or hydrobromic acid. They are obtained, e.g. by treating the methylol amides of Formula H with thionyl chloride or thionyl bromide. Other suitable derivatives of the methylolamides of Formula II are, e.g. the di-(carboxylic acid amidomethyl)-ethers obtained by condensation of these methylol compounds in the presence of, e.g. phosphorus oxychloride.

As these reactive derivatives have to be produced from the methylol compounds of Formula II, the latter are to be preferred.

Instead of the compounds of Formula II or their reactive derivatives, in some cases a mixture of their precursors, e.g. a mixture of a,ot'-diCh1OIO- or oz,u'-dibl0m0- dimethyl ether with the corresponding amides of formula in some cases also with the nitriles of formula NsC-Y (which are saponified to form the amides mentioned under the reaction conditions) can be used. Examples of such nitriles are chloroacetonitrile, aor B-chloropropionitrile, a,fl-dichloropropionitrile. (This method of performing the process according'to the invention is described, for example, in the following Belgian Patents 603,420, 612,417, 613,037, 625,916, 628,442, 628,932, 630,205.)

The 1,4-diamino-anthraquinone compounds of Formula I are advantageously first sulphonated and then reacted with the compound of Formula H or with a reactive derivative or with a mixture of the precursors thereof mentioned above. The starting materials of Formula I are sulphonated by the usual methods in concentrated sulphuric acid or oleum, preferably under mild temperature conditions, e.g. at room temperature.

The reaction of unsulphonated or sulphonated compounds of Formula I with the compound of Formula II or its reactive derivatives or mixture of precursors is advantageously performed in the presence of acid condensing agents or agents which split off water and react in the same way. Examples of such condensing agents are concentrated hydrochloric acid, zinc chloride, phosphorus pentoxide, acetic acid anhydride, syrupy phosphoric acid and oleum. The preferred condensing agent, however, is concentrated to anhydrous sulphuric acid. A technically particularly simple and, therefore, preferred embodiment of the invention consists in sulphonating and condensing the reaction partners in the same concentrated sulphuric acid without isolating intermediate products. The condensation temperature can vary within wide limits and depends chiefly on the condensing agent used. In concentrated sulphuric acid, the reaction occurs quickly and completely usually at room temperature; in some cases a slightly raised temperature is necessary. The finished reaction products are separated by pouring the sulphuric acid solutions or suspensions into ice water and converting in the usual way into the Water soluble alkali metal salts, whereupon the latter are isolated.

The acid anthraquinone dyestuffs of Formula III according to the invention dissolve well, even in hard water. They are suitable for the dyeing and printing of natural and synthetic fiber material containing polyamide such as silk, superpolyamide and superpolyurethane fibers, but, in particular, wool and also leather. They have very good affinity to these fibers, have good powers of penetration and drawing very evenly onto these materials from an acid, weakly acid or neutral aqueous bath and produce fast greenish blue, blue or reddish blue dyeings thereon which have good fastness to wet media, especially fastness to washing, milling and perspiration, especially in the alkaline range, and they are particularly fast to light. They can be combined well with suitable yellow wool dyestuffs and, with these, yield a dyestuff mixture having well balanced absorption power. They are superior to previously known dyestuffs of similar constitution with regard to their powers of combination with yellow wool dyestuffs.

In contrast to equalizing dyestuffs of similar structure the dyestuffs according to the invention are fiber-reactive dyestuffs which show good level strike on polyamide fibers, but have no equalizing power.

Most preferred in view of their superior light-fastness on polyamide fibers, especially on wool and silk, and their level drawing on these fibers, when dyeing them green shades with blended dyes in which dyestuffs according to the invention represent the compound, are those of the latter dyestuffs which fall under the formula wherein:

R represents methyl, and

R represents methyl or ethyl, or R and R taken together with the group to which they are linked, represent cyclohexyl, and

chloro-snbstituted 7 phenylthio-phenyl, bromo-substituted phenylthiophenyl, benzyl-phenyl, alkyl-substituted benZyl-phenyl, chloro-substituted benzyl-phenyl and bromo-substituted benzyl-phenyl,

alkyl in the aforesaid radicals substituted therewith having from 1 to carbons atoms, and wherein Q is substituted at a ring carbon atom thereof with one CH -NHCOY fiber reactive grouping, wherein Y represents the groupings mentioned hereinbefore, and preferably chloroor bromo-substituted lower alkyl of 1 to 2 carbon atoms, more especially CH Cl, and wherein Q is substituted at from one to two ring carbon atoms thereof, which ring carbon atoms free from the last-mentioned fiber-reactive grouping, by, respectively, from one to two sulfonic acid groups.

Compared with structurally similar dyestuffs which contain an n-propylamino or n-butylamino group in l-position at the anthraquinone nucleus, the preferred compounds according to the invention are distinguished by a completely unexpected 50% to 100%--or even greater increase in light fastness especially on wool.

To summarize, dyestuffs falling under Formula IV of this invention and having identical dyeing properties are produced (a) by sulfonating the corresponding dyestufi of the formula wherein:

Z represents otherwise unsubstituted phenoxyphenyl, alkyl-substituted phenoxy-phenyl, bromo-substituted phenoxy-phenyl, chloro-substituted phenoxy-phenyl, phenylthio-phenyl, alkyl-substituted phenylthio-phenyl, chloro-substituted phenylthio-phenyl, bromo-substituted phenylthio-phenyl, benzyl-phenyl, alkyl-substituted benzyl-phenyl, chloro-substituted benzyl-phenyl and bromo-substituted benzyl-phenyl,

Alkyl in the aforesaid radicals substituted therewith having from 1 to 5 carbon atoms, sufiiciently strongly to introduce from about 1 to 2 SO H groups into the grouping Z, and

Reacting the resulting sulfonated dyestuff with, per mol thereof, about one mol of a reactant selected from the class consisting of An N-methylol compound of the formula YCONHCH OH wherein Y has the foregoing meaning,

A reactive ester of said compound and an inorganic acid, and the condensation product of a compound of the formula YCN wherein Y has the foregoing meaning and a dihalogeno-dimethyl ether,

In the presence of a Friedel-Crafts condensing agent under the conditions of the Einhorn reaction, said Friedel-Crafts condensing agent being preferably concentrated sulfuric acid; or (b) reacting the corresponding dyestufi' of Formula V with, per mol thereof, about one mol of a reactant selected from the class consisting of A Compound of the formula YCONHCH OH wherein Y has the foregoing meaning, a reactive ester of said N-methylol compound and an inorganic acid, and the condensation product of a compound of the formula YCN wherein Y has the foregoing meaning and a dihalogeno-dimethyl ether,

In the presence of a Friedel-Crafts condensing agent and then sulfonating the resulting fiber reactive dyestulf sufiiciently strongly to introduce from about 1 to 2 SO H groups into the grouping Z.

Optimal results are obtained with the anthraquinone dyestuffs of the Formula IV in which the 1-position of the anthraquinone nucleus is occupied by cyclohexylamino, and more particularly those of the formula O IH-Q," VI wherein Q" represents p-phenoxyphenyl, methyl-substituted p-phenoxypheuyl, p-phenylthiophenyl or methyl substituted p-phenylthiophenyl, Q" being linked with its phenyl moiety to the adjacent NH-bridge, and wherein Q" is substituted by one -SO' H group and by one CH NH-COCH Cl group, each of which groupings CH -NH-COCH Cl and SO H is linked to a different carbon atom of Q; these dyestuffs dye wool and man-made polyamide fibers in greenish-blue shades which, apart from the aforementioned superior light fastness, are particularly wet-fast, and especially fast to washing, e.g. in water, and to alkaline milling.

The following non-limitative examples further illustrate the invention. The temperatures are given in degrees centigrade. Parts and percentages are by Weight unless expressly stated otherwise.

Example 1 (a) 45 g. of 4-amino-4'-methyldiphenyl ether, 34.4 g. of 1isopropylamino-4-bromoanthraquinone and 10 ml. of ethylene glycol monoethyl ether are placed in a flask fitted with a stirrer and the mixture is heated to whereupon a red melt is obtained. 9.90 g. of anhydrous potassium acetate, 0.01 g. of cuprous chloride and 0.2 ml. of water are added and the whole is stirred for 20 hours at a temperature of 100l02 while passing a stream of nitrogen over the surface of the melt. ml. of normal aqueous hydrochloric acid heated to 90 are then poured into the mixture and the whole is stirred for some time at 85 until the end product separates in crystalline form. This is filtered off at 80, washed with hot normal aqueous hydrochloric acid and then with water until the filtrate has a neutral reaction and finally with methanol. After drying, a crude product is obtained as a blue powder which is further purified by recrystallization from n-butanol. The pure dyestuff which corresponds to the formula is thus obtained as needles having a metallic shimmer. It melts at 172.

(b) 46.2 g. of 1,4-diamino-anthraquinone of the Formula (a) supra are added to 460 g. of sulfuric acid monohydrate and the solution obtained is stirred for 18 hours at a temperature of 23-25 13.65 g. of N-methylol chloracetamide are then added to this solution. The mixture is stirred for 24 hours at the same temperature, then poured onto a mixture of ice and sodium chloride and the precipitate formed is filtered off. The filter residue 9 10 is washed with 10% sodium chloride solution and again its magneto-nuclear resonance spectrum, such further filtered with good suction. The filter residue is then workup will not lead to products of improved properties, slurried in a little water, the pH of the slurry is adjusted and is, moreover, highly uneconomical, so that it is of carefully to 7 by the addition of sodium hydroxide soluno practical value.

tion and the dyestuff is salted out with sodium chloride, 5 The same applies to the dyestuffs described hereinafter;

filtered off and dried invacuo at 60. they are mixtures of all the isomers falling under the The dyestuif so obtained corresponds to the formula respective formulas representing them, such mixtures being useful dyestufis.

/CH3 NH-CH SOaH 0 NH -0- H3 L CHNHCOCH2C1 and consists of a mixture of all the isomers falling under If with otherwise the same procedure, instead of the the above formula. It is a blue powder which dissolves 20 l,4-diamino-anthraquinone of the first formula given easlly 111 and y W001 and y f from a neutral above, equivalent amounts of a 1,4-diaminoanthrato Wfiakly acld bath a y level greemsh :blue- Y quinone obtained by condensation of one of the l-(sec.

ings obtained have good wet fastness properties, especially 2 5 2 fi g gg gg m1 11mg fasmess to persplmnon 25 of Table I with one of the amino-diphenyl ethers, amino- While it is possible to isolate the isomers constituting dlphenyl thloeflms aminodiphenyl 'alkanes or amino the above dyestufi by known chromatographic techniques, diphenyl cycloalkanes given in column H of the Same and to identify the position of the fiber-reactive Einhorn table are used, then dyestufis having Similar Properties alkylamino)-4-halogen-anthraquinones given in column I group and of the sulfonic acid group in each isomer from are obtained.

TABLE I N o. I II Wool dyeings 2 OH; Greenish blue.

HzN O t a e ll 0 Br 3 Same as 2 above- Do.

HzN --0 czHa 4 .-d0 CH3 D0.

CHa

5 do CH3 D0.

HZNQ-O-G-b-Qm 6 ..do D0.

CH3 H2H-OC1Ireiflt HZN OQCI 9 do CH3 Reddish blue.

1H3 mNQ-oQ-om TABLE IC0ntinued No I 11 Wool dyeings 11 Same as 2 on preceeding page (EH3 Reddish blue.

12 d0 (7H3 Do.

nmQ-om 13 do 0'1 Blue.

14 .-do Do.

HzN- O 15. (3E (711: Greenish blue.

CH CH 16 CH3 Do H N -0O-cm (H) NH-(7H GHQ-CH3 l 0 Br 17 Same as 16 above- Do.

NzH 0 Cl 18 -d0 (31% Do.

19 do (3H3 Reddish blue.

20 CHz-CHs Greenish blue.

H2N 0 (I? N H-OE CH2 CH3 TABLE I-C0ntinued No. I 11 Wool dyeings 21 Same as 20 on preceding page (g h blue,

HaN 0 CH3 HzN 0 Cl 23 CH3 D0.

HzN -O- a? a fi CHz-CHfl-OH:

ll 0 Br 24 Same as 23 above Do.

HzN- -O C H;

EN 0 C1 26 CH: Do.

HEN 0 fl) l |IHCH CH:

27 Same as 26 above- D HzN O -CH;

H2N 0 C1 29 0H3 Do.

HzN O 1? T fi CHz-QH H 0 Br 30 Same as 29 above D HQN 0 CH;

31 -do Do.

32 CH Do.

(I? I;IH-CH\ 9H2 CHz-CHz-CHz-CE CH CH Do.

(I) rill-CE /CH2CHa I CHr-CE 34 H3 Do.

CHr-CHr-CHz-CH;

TABLE I-Continued No. I II Wool dyeings 35 CH; Greemsh blue.

HzN S a 2 l I 0 Br 36 Same as 35 abovP D0.

37 fin Do.

@Q HzN S (H) IfH-OH CHz-CH 39 Same as 38 above Do.

HQN OH:

40 d0 Do.

HaN 8 Cl 41 CH Do.

0 NH- H 42 Same as 41 above- Do.

HzN CH CH 43 ..do CH; Do.

l HQ CH3 I OCH;

44 an Do.

45 CH; D0.

11: (3H3 4s Hm-Q-QH -03, Do.

OH; I 47 4 HzNQ HQ a D0;

48"--. fin ENG-011 Do.

' TABLE IContlnued No. I II W001 dyeings 49 Same as 41 on precaeding page HzNQ-CH: Greenish blue.

CH: 50..." HaNQClL-Q Reddish blue.

I CH3 /CH; 51 m Nfi-Cg ENG-GHQ Greenish blue.

"CHr-CH:

II I 0 Br CH; 52 Same as 51 show ENG-C HflQ Do.-

53 .-do Do.

HzN C 54 CH; D0.

HzN CH 0 NED-C CH3 1| CHr-CH 55 Same as 54 above lCH; Do.-

56 -d0. Do.

HIN CH 57 CH: C D0.

El) IEIIL-CE HIN l CH1 CH3 58 Same as 57 above. Do.

HZN CH KIJH;

59 (in D0.

CE: g HzN C O NH-C TABLE I-Conflnued No. I n W001 dyeings (In \CHPCH:

II I 0 Br 61 Same as 60 abov D G2 (in 63 C Do.

H \CHPC 64 Sameas63 above .i

HQN CH CH ME Q Q 66 CH1 EN on CH 0 NBC-(2H 2 gl m Hr-CHI 67 HP I Do HN OH H I 0 NH H 2 G 2-0 Q 68... CH: Do

HN 3 E (m CHE-011F011:

l 0 Br e9....-...... CH: D6

| H 0 WE CH, Q Q

I I CHz-(EH CH3 Greenish blue.

21 22 TABLE I-Contlnued N o. I 11 Wool dyeings 70 Greem'sh blue.

(H) NH(|3H ll Br CH Do.

0 NEE-CH H CH 002m I 0 Br CH D 72 NHCH I! 0 Br 73 Same as 72 above HzNQ-BQBI Do. 4 rln NHQOHz-QB! Do.

The l-(sec. alkylamino)-4-halogen-anthraquinones Example 80 gwen m 9 m 1 of Table I obtamed by brommfltmg 46.2 g. of 1,4-diamino-anthraquinone of the formula or chlonnating the corresponding l-(sec. alkylam1n0)- anthraquinones with elementary bromine or with sulphuryl chloride in a solvent not taking part in the re- 0 NH-CH action, e.g. o-dichlorobenzene or nitrobenzene. The 1- H CH3 (sec. alkylamino)-anthraquinones are produced in their turn by reacting l-chloroor 1-bromoanthraquinone with the corresponding sec. alkylamine at 140-150", in an autoclave if necessary.

Dyestuffs having similar properties are also obtained if, in the examples given above, equivalent amounts of the N-methylol amides given in the following Table II are used with otherwise the same procedure instead of N-methylol chloracetamide:

are added to 500 g. of sulphuric acid monohydrate and the mixture is stirred for 18 hours at 23-25 Also, 11.8 g. of chloroacetonitrile and 0.1 g. of hydroquinone are dissolved in 65 g. of 93% sulphuric acid at 20, this solution is stirred for 3 hours at a temperature of 33-35, cooled to 10-12, 7.5 g. of a,oz'-diCh1OIO- dimethyl ether are added dropwise within 1 hour and then the mixture is stirred, first for 3 hours at 10-12 and then for 4 hours at 13-15 These two solutions are then combined and the whole TABLE H is stirred for 24 hours at 23-25". The reaction mixture 75. BICH2CONHCH2OH is afterwards poured into a mixture of 1200 g. of ice and 76 120 g. of sodium chloride and the precipitate obtained 6 is filtered off and washed with a 10% sodium chloride 3 solution. The precipitate is then slurried in 400 ml. of 77 CICHzCHzC z water and the pH of the slurry is adjusted to 7 by the addition of dilute sodium hydroxide solution. 35 g. of 7s -C1CHCHCONH0H20 sodium chloride are then added to the mixture which is 01 afterwards heated to 60 and the precipitated dyestuif is filtered off and dried at 60 in vacuo. 79 "BPCHPCHPCONEPCHZOH The dyestufi so obtained corresponds to the formula /CH3 (H) NHCH 23 and consists of a mixture of all the isomers falling under the above formula.

It is a blue powder which dissolves easily in water and dyes wool from a neutral to weakly acid bath in level, greenish blue shades which have good wet and light fastness properties.

Acid anthraquinone dyestuffs having similar properties are obtained if, with otherwise the same procedure, in stead of the 1,4-diamino-anthraquinone compound of the first formula given above, equivalent amounts are used of 1,4-diarnino-anthraquinone compounds which are obtained by condensation of l-(sec. alkylamiuo)-4-halogenanthraquinones given in column I of Table I with the aminodiphenyl ethers, aminodiphenyl thioethers, aminodiphenyl .alkanes or aminodiphenyl cycloalkanes given in column II of the same table.

Acid anthraquinone dyestufis having similar properties are also obtained if, instead of chloroacetonitrile, equivalent amounts of the nitriles or amides given in the following Table III are used:

TABLE III 81 Cl-OHz-CONH:

s2 ClCHzCH2-CN 83 -.ClCHz-CNz-CONH2 84 -ClCHz-CH-CN Example 85 A homogeneous mixture of 50.4 g. of 1,4diaminoanthraquinone of the formula /CH3 g NH-CH and 13.65 g. of N-methylol chloroacetamide are added to 300 g. of 2325 warm 96% sulphuric acid and the solution obtained is stirred for 18 hours at the same temperature. 130 g. of 66% oleum are then added dropwise to the solution while cooling at 25 and the whole is then stirred for 6 hours at the same temperature. The solution is then poured into a mixture of ice and sodium chloride, the precipitated dyestulf is filtered off and washed with 10% sodium chloride solution. The product is further worked up as described in Example 1. A dyestuff, the dyeing properties of which are identical with those of the dyestufi produced as described in Example 5 and which corresponds to the formula and consists of a mixture of all the isomers falling under the above formula, is obtained.

Example 87 g. of texturized Nylon 66 jersey are introduced, at a temperature of 40, into a dyebath containing 2 g. of the dyestuff produced according to Example 2, 2 g. of acetic acid, 2 g. of the sodium salt of sulfated ricinoleic acid-butyl ester and 0.5 g. of a mixture of urea and the condensation product of stearylamine with 20 mol of ethyleneoxide, in 5000 ml. of water. The inner temperature is evenly raised to boiling during half an hour, whereupon dyeing is carried out for one hour with light boiling. The jersey is then rinsed and dried. A green-blue, non-Streaky dyeing is obtained which is very fast to washing, light and perspiration.

Example 88 14.64 parts of l-cyclohexylamino-4-(4'-phenoxyphenylamino)-anthraquinone of the formula are mixed at 0-5 with 3.91 parts of N-methylol chloracetamide and the mixture is added to parts of 90% sulfuric acid. The whole is stirred for 24 hours at the same temperature, whereupon the solution is poured onto ice, the precipitate obtained is filtered off and dried. The condensation product, on being sulfonated for 24 hours at 15-18" in 10% oleum, produces a dyestuff which contains about one sulfonic acid group per molecule.

The same dyestutf is obtained by dissolving the 14.64 parts of the aforesaid starting material in sulfuric acid monohydrate and stirring the solution for 18 hours at 23 to 25 whereby the starting material is monosulfonated, whereupon the above-stated amount of N-methylol chloracetamide is added and the mixture stirred for 24 hours at 23 to 25 The product is then precipitated by pouring onto ice and further isolated as described above.

The resulting dyestufif of the formula (II) I IHQ, (A) wherein Q' represents monosulfonated p-phenoxy-phenyl substituted at one of its SO H-free carbon atoms by the grouping CH NHCOCH Cl, dyes wool and manmade polyamide fibers in greenish-blue shades from a weakly acid bath; the dyeings are fast to washing, e.g. with water, and to alkaline milling.

This dyestuff consists of a mixture of isomers, among which the major portion is a mixture of all isomers falling under the formula I NH The individual isomers of such sulfonated anthraquinone dyes serving as acid wool dyes for exhaustion dyeing are known to have the same fastness properties as the mixture thereof and their isolation from such mixture, which could be efiected by the known chromatographic techniques, would therefore be of no interest, and, moreover, very uneconomical.

By using in the above example, under otherwise the same conditions, 15.12 parts of l-cyclohexylamino-4-(4'- phenylthio-phenylamino)-anthraquinne, or 15.06 parts of 1 cyclohexylamino 4 [4 (p methyl phenoxy)- phenylamino]-anthraquinone, or 15.54 parts of l-cyclohexylamino 4 [4 (p methyl phenylthio) phenylamino]-anthraquinone or 15.48 parts of l-cyclohexylamino 4 (2',6 dimethyl 4 phenoxy phenylamino)-anthraquinone, the dyestuffs having corresponding constitutions and similar properties are obtained. Thus, Q' represents in these \dyestulTs 4-phenylthiophenyl, 4'-(p-methyl-phenoxy)-phenyl, 4-(p-methylphenylthio)-phenyl or 2',6-dimethyl-4'-phenoxy-phenyl, respectively, and is in each case monosulfonated and substituted, at a SO H-free carbon atom, by the grouping CH NHCOCH Cl. A substantial portion of each of these dyestuifs consists of the corresponding isomers analogous to those of Formula B.

The third dyestuff according to Example 88, produced by using 1-cyclohexylamino-4-[4'(p-methyl-phenoxy)- phenylaminoJ-anthraquinone, is also obtained by the following procedure:

50.2 g. of a 1,4-diaminoanthraquinone of the formula 0 NH O CH;

are added to 500 g. of suliuric acid monohydrate and the mixture is stirred for 18 hours at 23 to 25.

Also, 11.8 g. of chloracetonitrile and 0.1 g. of hydroquinone are dissolved in 65 g. of 20 warm 93% sulfuric acid, this solution is stirred for 3 hours at a temperature of 33 to 35, cooled to to 12", then 7.5 g. of aged-dichlorodimethyl ether are added dropwise within 1 hour and finally the mixture is stirred, first for 3 hours at 10 to 12 and then for 4 hours at 13 to 15.

Both these solutions are then combined and the whole is stirred for 24 hours at 23 to 25. The reaction mixture is then poured into a mixture of 1200 g. of ice and 120 g. of sodium chloride, the precipitate formed is filtered off and washed with a 10% sodium chloride solution. The precipitate is slurried in 400 ml. of Water and the pH of the slurry is adjusted to 7 by the addition of dilute sodium hydroxide solution. 35 g. of sodium chloride are then added to the mixture, the whole is heated to 60, the dyestufi formed is filtered off and dried at 60 in vacuo.

We claim:

1. A fiber-reactive anthraquinone dyestufl of the formula 0 NH-CH ll H I o NH-Q wherein:

R represents methyl, R represents methyl or ethyl, or R and R taken together with the group to which they are linked represent cyclohexyl, Q represents phenoxyphenyl, alkyl-substituted phenoxyphenyl, bromo-substituted phenoxyphenyl, chlorosubs-tituted phenoxyphenyl, phenylthiophenyl, alkylsubstituted phenylthio phenyl, chloro substituted phenylthio phenyl, bromo substituted phenylthiophenyl, benzyl-phenyl, alkyl-substituted benzylphenyl, chloro-substituted benzyl-phenyl and bromosubstituted benzyl-phenyl, alkyl in the aforesaid radicals substituted therewith having from 1 to 5 carbon atom-s, and wherein Q is substituted at ring carbon atoms with (a) one -CH NHCOY fiber-reactive grouping, wherein Y represents chloroor bromo-substituted lower alkyl of 1 to 2 carbon atoms, and (b) one to two sulfonic acid groups. 2. A dyestufi as defined in claim 1, wherein Y represents --CH CI.

3. A dyestutf as defined in claim 2, wherein represents cyclohexyl, and

Q is monosulionated 4-(4-methylphenoxy) -phenyl. 4. A dyestuff as defined in claim 2, wherein each of R' and R is methyl, and

Q represents monosulfonated 4-(4-methylphenoxy)- phenyl. 5. A dyestuif as defined in claim 2, wherein each of R and R' is methyl, and

Q represents monosulfonated 4-phenoxyphenyl.

References Cited UNITED STATES PATENTS 2,029,007 1/ 1936 Weinand 260-374 2,419,405 4/ 1947 Klein 260380 2,659,737 11/1953 Peter et a1. 260-374 2,740,796 4/1956 Singer et a1. 260-372 2,870,173 1/1959 Hendermann et a1. 260374 LORRAINE A. WEINBERGER, Primary Examiner HAROLD C. WEGNER, Assistant Examiner US. Cl. X.R. 

